A direct democracy via the internet would be an awful idea; it would never work and will never happen.
Additionally, most people are fucking morons with little in the way of adequate knowledge, intelligence, or fore-thought; most people have no idea what's good for them or the nation/world at large and would sooner vote for immediate benefits as opposed to short term loss in favor of great long term gain. Not to mention the sheer number of homophobes, racists, xenophobes, jingoists, anarchsists, fascists, and other lunatics who vote in favor of all kinds of ridiculous social and economic policies that would not only result in ruin, but a cessation of all progress regression into the dark ages.
You know what, fuck democracy altogether. Unless the massess are smart and educated enough to make responsbile desicions for the true good of the nation, then there should just be a council of wise leaders or some similar group in charge of running things.